Oxygen Sensor Replacement Estimate for Mercedes-Benz S400

Mercedes-Benz S400 Oxygen Sensor Replacement costs $240 on average. Following is a breakdown of the labor and parts estimates.

Skip the repair shop - our mechanics come to you
YourMechanic Price
$184 to $309
Labor: $70 -$80
Parts: $114 -$229
Average Dealer price
$321 to 551
Average Shop price
$226 to 370
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%
Get a quote
CarServiceYourMechanic PriceShop/Dealer Price
2012 Mercedes-Benz S400V6-3.5L HybridService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$192.97Shop/Dealer Price$249.13 - $360.42
2011 Mercedes-Benz S400V6-3.5L HybridService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$312.92Shop/Dealer Price$399.18 - $600.51
2011 Mercedes-Benz S400V6-3.5L HybridService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$190.70Shop/Dealer Price$246.33 - $355.94
2012 Mercedes-Benz S400V6-3.5L HybridService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$312.92Shop/Dealer Price$399.13 - $600.44
2010 Mercedes-Benz S400V6-3.5L HybridService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$192.97Shop/Dealer Price$249.15 - $360.45
2010 Mercedes-Benz S400V6-3.5L HybridService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$303.44Shop/Dealer Price$387.20 - $581.34
Show example Mercedes-Benz S400 Oxygen Sensor Replacement prices

Parts required for a Mercedes-Benz S400 Oxygen Sensor Replacement

Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

586 reviews
Joshua
22 years of experience
mr floyd was very friendly and fixed the problem right away, and also gave some good advice on how to maintain and keep my car running in good condition.
1997 MERCEDES-BENZ E320 - POWER STEERING PRESSURE HOSE REPLACEMENT
Want Joshua's expert advice? Ask your question now. Its free!
450 reviews
Ben
36 years of experience
Ben is awesome!
2006 MERCEDES-BENZ E350 - SERPENTINE/DRIVE BELT REPLACEMENT
Want Ben's expert advice? Ask your question now. Its free!
153 reviews
Jose
10 years of experience
very good job at an expensive cost
2003 MERCEDES-BENZ CLK320 - BRAKE LIGHT SWITCH REPLACEMENT
Want Jose's expert advice? Ask your question now. Its free!
61 reviews
Chad
11 years of experience
CHAD, THANKS FOR WHAT YOU DONE,I AM GOING TO GET IT INSPECTED AND HAVE MY CHARGING SYSTEM CHECK OUT.I AM GOING TO RESTORE MY BIGBODY CAN YOU HELP!!!
1994 MERCEDES-BENZ S600 - CAR IS NOT STARTING INSPECTION
Want Chad's expert advice? Ask your question now. Its free!

All about Oxygen Sensor Replacement

With each new model year, manufacturers are adding more oxygen sensors to better manage engine operation. Some high performance engines have an oxygen sensor for each cylinder as well as one for the rear of each catalytic convertor. The sensors are located either underneath the hood or underneath the car. The oxygen sensors are connected (screwed) to the exhaust pipe, either in front or back of the catalytic converter. The front (upstream) sensors measure the amount of oxygen in the exhaust system. The purpose of the front oxygen sensor(s) is to measure how rich or lean the gases are as the gases exit the combustion chamber. Depending upon whether the exhaust gas is lean (high in oxygen content) or rich (low in oxygen content), the amount of fuel entering the engine is adjusted by the engine management computer to try and maintain an ideal mixture that produces the lowest emissions output from the catalytic convertor. Rear (downstream) sensors are located behind the catalytic converter. The purpose of the rear oxygen sensor(s) is to monitor the oxygen content of the exhaust gases leaving the catalytic convertor. If one or more of the oxygen sensors are faulty, your car may not pass the emissions test. If you drive your car with a faulty oxygen sensor, you may get poor gas mileage and it can damage the catalytic converter.

Oxygen Sensor Replacement Estimates for Popular Mercedes-Benz Models